linux-kernel - Re: [PATCH] phy: qcom: qmp-combo: Add missing PLL (VCO) configuration on SM8750

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <azx5zo4rbhw434vyyunpjswtjfyr5notjd7glm2hvg3yertvzq@wcbrrmhstvlc>
Date: Mon, 16 Jun 2025 13:52:10 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>,
        Melody Olvera <melody.olvera@....qualcomm.com>,
        Wesley Cheng <quic_wcheng@...cinc.com>, linux-arm-msm@...r.kernel.org,
        linux-phy@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] phy: qcom: qmp-combo: Add missing PLL (VCO)
 configuration on SM8750

On Mon, Jun 16, 2025 at 08:25:42AM +0200, Krzysztof Kozlowski wrote:
> Add missing DP PHY status and VCO clock configuration registers to fix
> configuring the VCO rate on SM8750.  Without proper VCO rate setting, it
> works on after-reset half of rate which is not enough for DP over USB to
> work as seen on logs:
> 
>   [drm:msm_dp_ctrl_link_train_1_2] *ERROR* max v_level reached
>   [drm:msm_dp_ctrl_link_train_1_2] *ERROR* link training #1 on phy 0 failed. ret=-11
> 
> Fixes: c4364048baf4 ("phy: qcom: qmp-combo: Add new PHY sequences for SM8750")
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>  drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 3 +++
>  1 file changed, 3 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>


-- 
With best wishes
Dmitry